package com.xunwulian.web.interceptor;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ShiroRealm extends AuthorizingRealm {

    protected static final Logger logger = LoggerFactory.getLogger(ShiroRealm.class);

    /**
     * 认证
     * @param token
     * @return
     * @throws AuthenticationException
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(
            AuthenticationToken token) throws AuthenticationException {

        logger.info("doGetAuthorizationInfo() ========1");

        String username = (String) token.getPrincipal(); // 得到用户名
        String password = new String((char[]) token.getCredentials()); // 得到密码

        if (null != username && null != password) {
            return new SimpleAuthenticationInfo(username, password, getName());
        } else {
            return null;
        }

    }

    /*
     * 授权查询回调函数, 进行鉴权但缓存中无用户的授权信息时调用,负责在应用程序中决定用户的访问控制的方法(non-Javadoc)
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection pc) {

        logger.info("doGetAuthorizationInfo() ========2");

        return null;
    }
}
